And finally tonight, the big game, just three days away. And we are emboldened tonight to you our opinion of the funniest moments in the funniest super bowl ads ever. Do you agree? And how about... See More
And finally tonight, the big game, just three days away. And we are emboldened tonight to you our opinion of the funniest moments in the funniest super bowl ads ever. Do you agree? And how about seeing some new ones? Here's abc's david wright. Reporter: For as long as there's been a super bowl. ♪ the madison avenue approach has been -- sex sells. Bud. Wise. Er. Reporter: But funny sells even better. The corolla's cabin is so quiet, we've locked our friend inside with ferocious sleeping badgers. Reporter: Time sometimes it eelgs extreme humor. If awakened, they'll gnaw his face off. Reporter: Like this toyota commercial from super bowl xlii. This year, taco bell has an ad aimed at aging baby boomers. ♪ rebechling all the way back to the nursing home. Dad? Where do babies come from? Ah -- oh. Reporter: This year, one of the funniest ads features a dad's fantastic response to an innocent question. And that, son, is where babies come from. But jake said babies are made when mommies and daddies -- Reporter: It's enough to make my parent smile. But are you more likely to buy the mini van? Maybe not, according to a new harvard business school study. Too much entertainment actually detracts people from buying products. Reporter: Case in point, what may be the funniest super bowl ad ever. Being a cat herder is probably about the toughest thing I've ever done. Reporter: An old west parody. For a data processing company. Not everyone can do what we do. Reporter: But can you name the product? We couldn't. So but we sure did like the ad. David wright, abc news, los angeles.
This transcript has been automatically generated and may not be 100% accurate.